<?php

class Ext_Comment
{
    protected static $_instance = null;

    public static function getInstance()
    {
        if (null === self::$_instance) {
            self::$_instance = new self();
        }

        return self::$_instance;
    }
    
    protected function __construct()
    {
        
    }
    
    public function show($commentId)
    {
        return new Ext_Comment_Show($commentId);
    }
}
